Improvement in gas-regulators



2 Sheets-Sheetl. I. COOK.

GAS-REGULATOR. No.182.,898. Patented Oct. 3, 1876.

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N.PETERS, PHOTO-LITHOGRAPNER, WASHINGTON. D C- 2 Sheets-Sheet 2 I. COOK.

GAS-REGULATOR No.182,,898. Patented O.ct.3,1876.

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N-PETERS, PHOYO-LITHOGRAFHER, WASHINGTON, D C

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UNITED STATES PATENT OFFICE.

ISAAC COOK, OF ST. LOUIS, MISSOURI, ASSIGNOR OF ONE-HALF HIS RIGHT TOJACOB R. SPR AGUE, OF SAME PLACE.

IMPROVEMENT lN GAS-REGULATORS.

Specification forming part of Letters Patent No. 182,898, dated October3, 1876; application filed February 2, 1876.

To all whom ct may concern Be it known that I, ISAAC 000K, of the cityand county of St. Louis, and State of Missouri, have invented a new anduseful Improvement in Gas-Regulators, which improvement is fully setforth in the following specification, reference being had to theaccompanying drawings.

My improvement consists in the combination of an inverted cup whose edgeworks in a mercury joint, and which is attached to the stem of thevalve, the valve-stem being guided by fins above the valve by its lowerend passing through a suitable guide-orifice in the bottom of the case,and its upper end passing through a guide-frame or bracket above.

My improvement also consists in combining such cup-valve and valve-stemwith a valvebox fitted in the case with a ground slip-joint, so that thevalve-joint may be lifted off with the valve-stem and inverted cup.

My improvement also relates to a means of adjusting the pressure of gasupon the burners according to circumstances 3 and consists in a barsupporting a sliding weight, one end of the bar being supported in thevalve-stem, and the other hinged to a fixed frame or bracket.

Figure 1 is an axial section at a a, Fig. 2. Fig. 2 is an axial sectionat b b, Fig. l.

A is the case, which is preferably made circular, and which has aninduction-pipe, B, and discharge-pipe O. From the pipe B the gas entersthe valve-box D, fitted onto the upper end or nipple b of the pipe B byan air-tight slip-joint, so that it may be readily put on or taken off.The upper end of the valve-box ends in a nipple, d, and around the lowerend of this nipple is the valve-seat d. E is the valve, havingguide-fins F, which fit snugly, but slide easily, against the inside ofthe neck or nipple d, so as to guide the valve-stem e, and consequentlyaid in guiding the inverted cup G. The lower end of the valve-stem 6passes through a guide-hole, a, in the bottom The upper end of the stemis guided in the end of a bracket above the cap. It will be seen that bymeans of the said guides the stem is perfectly guided, and the cupprevented from binding against the sides of the annular trough, intowhich its edge descends. Extending downward from the center of the caseA, and surrounding the hole a, is a nipple, H, fitted and closed with ascrew-cap, I. The valve-stem has near the upper end a collar, K, abovewhich is a rubber gasket, k, and on the gasket rests the inverted cup G,through which the stem passes, and on which it is secured by a nut, L.The lower edge of the cup descends into the annular trough M, whichcontains quicksilver, to prevent the escape of gas from the cup. N is aweight placed on the top of the cup. The weight may be adjusted in sizeto regulate the gas-pressure as desired, for it will be seen that thetendency of the gas under pressure is to raise the cup and close thevalve, and the tendency of the weight is to depress the cup and open thevalve, and that when these forces arejust equal in their action on thecup the valve remains at rest; but on an increase taking place of theamount of gas consumed the pressure beneath the cup decreases, and thevalve-opening is increased, so as to allow the passage of more gas. Thevalve, of course, is partly closed on opposite conditions.

To regulate the opening of the valve at will by increasing ordiminishing the weight on the stem, I provide a frame or bracket, O,whose lower end is secured to the case A, and which extends out to oneside, and has an arm, 0, extending over the regulator. The stem extendsup through a guide-hole, 0, in the arm 0, which thus forms its upperguide. To the arm 0 of the frame 0 is hinged at 19 one end of a curvedbar, P, whose other end is connected by a link, Q, to the valve-stem 6.Upon the bar P is a weight, R, which has endwise movement on the bar, soas to increase or diminish the effect of the weight on the stem, asaforesaid. The bar has a return bend at 10, so that the weight R can becarried beyond the hinge point 10, so as not only to relieve the stemfrom the depressing influence of the weight, but actually to raise upthe stem and close the valve. The bar P inclines downward toward thevalve-stem, so that the weight when left to itself will travel to thestem end of the bar, and this movement of the weight isfacilitated bysuspending it on a pulley, 1

To adjust the weight upon the bar P, a cord or wire, S, is attached tothe weight and extends to any part of the building from which it isdesired to regulate the position -of the weight, and this may be donebya movable handle or knob, combined with a scale, to indicate theposition of the weight.

T is a cover fitting on the case A, and through which the stem passes. Uis a screwplug to allow the escape of liquid resulting from condensationfrom the inside-of themegulator.

The cap I may be unscrewed to allow the emptying from said cap of anyliquid deposit.

I claim- 4 I 1. The combination,fiiitwthvvettically'movtached thereto,the stem being provided with guides a F o, substantially as and for thepurpose set forth.

'2. The combinatiomof *i'cup G, "stem e, val-ve E, and removablevalve-box D within said cup, constructed substantially as set forth.

3. The combination of the inverted cup G,

"valve Eastemw, bar 1 and adjustable weight R, substantially as and forthe purpose set forth.

vISA-A0 000K. Witnesses:

SAML. KNIGHT, ROBERT BURNS.

